Improvement in jcachotes poe bobing wagon-hubs



- uiten tetra strat ffirr.

J. w, EMERSON., or' ROCHESTER', MINN'nsOTII.

Letters Patent No. 74,052, dated February 4, 1868.

IMPROVEMENT IN MACHINES vson BORING WAGON-nuns.

`TO `ALL WHOM IT MAY CONCERN:

Be it known that I, J. W. EMERSON, of Rochester, in the county of Olmstead, and 4 State of Minnesota, have invented a new and-useful Improvement in Wagon-'Hub Beamer andI do hereby declare Vthat the followingisfa full, clear,and exact description thereof, which 4will enable others skilled in the art to make .and use the same, reference being had to the accompanying drawings, forming part of this specification. i

Figure 1 is a. side v'iew of my improved machine attached to a hub, par't of the hub being broken4 away to ehowthe construction of the cutter.

FigureI 2 is. a detail view ofthe forward plate.

Similar letters of reference indicate corresponding parts.Y

My invention vhas for its object to furnish an improved `machine by means of which-"wagon and other hubs may be reamed out-quickly and accurately, so as to be ready to at Once receive the cast-iron box; and it con,- sis-tsV in the combination and arrangement. of the various parts by which the cutter'is adjusted to ream a hole ot` the desired size, and to-give the required taper to the said hole the whole being constructed andai-ranged as hereinafter more fully described.

A represents a wagon-hub, which is clamped between the platesiB and C. Dareslidng blocks, having shoulders formed upon their upper sides, and having'a broad dove-tailed slotforrn'ed in' their under sides to receive the said plate B, upon which they slide back and forth. E are -thumb-screws, swivelled to supports b attached tov/the plate B, and screwing into thesliding blocks D, so` that,-by turning the said screws, the said blocks may be moved forward't'o clamp the'end of the hub, or` to adjust 'its position. c1 are dove-tailed grooves,

formed upon the under side of the plate C, in which the upper ends ofthe blocks or arms F slide back and' forth as they are moved by the thumb-screws G, swivclled tothe projections 'c2 formed -npon or attached to the under side of the plate- G. The sliding blocks F, three at least'ct' which should be used, have shoulders fornied fupon their lower ends to receive and hold the end-ofthe hub A. The -plates Bland C are connected toeach other by the rods H, which have loops oreyes formed upon theirlower ends to receive the ends ofthe plate B, and have screw-threads cut upon theirupper ends, upon which are screwed the thumb-#nuts I, to clampthe'hub. A.' This construction enables'thehub' to beso adjusted that the hole through itmay be in the centre of the wheel, even if itshould be at one side' of the centre ofthe saidrhb, -Jisa s'haft,lhaving a'han'dle, jl, similar to an ordinary auger-handle, attached to itsupper end, and having ascrew-.thread cut upon its lowerpart, which screws linto 'a hole formed -in the centre'v of the plate B. The shaft J passes through `the centre ofra. small circular plate, K, which works in a hole'formed in the Ycentre of the plate-C. .L is 'a small shaft, which passes `down at the side of the shaft J, through-the handle y", through the small circular plate K,pand-throngh a; support, jz, attached to thcmiddlc part ofthe said shaft J, sol-as to be carried with the `said shaft in' its revolutions.

The shaft L has a small crank, M, attached to its upper end, and a small bevel-gear wheeL-N, attached-toits I lower end, the teeth of which mesh into the teeth of the bevel-gear wheel O, which works upon the screw-thread cut upon theiend of the arm l?, which passes through a slot formed in the shaft J, and its other-'end -isat'tached to the shank of the cutter R, which' alsov 'passes vthrough the same slotin thesad shaft J, so that, by turning the shaft L by means of the crank M, thecutter R may be moved out erin, according to the required size of the hole. S is a small gear-wheel, which rests upon the platel K, which allowsrthe shaft L to slide freely through it, and which is made to lrevolve with t-he said shaft by having a feather formed init, which enters a longitudinal lslot or groove formed in the said shaft'. T is a stop, removably attached to the`upper side of the plate yC by a set-screw and dovrei-pin,` and which serves adouble purpose, first, that of a button. to keep the small plate K securely in place, and, second, that of a nger'to engage with the teeth ofthe sliding-geur wheel S, and parl tially rotate it, independently of th'e shaft J, at each revolutionof" the said shaft J, so as to draw the cutter R gradually and regularly inward, and give the'desired taper to the hole in the hub.,`

Iclaim'as'new, and desire to secureby Letters .Patent- The small shaft L, in combination with the shaft J, handle'j, gear-wheel S, circular plate 1li, stop T, geen wheels N 0, and cutter R, substantially as described for the 'purpose specified.

J. W. EMERSON.

Witnesses:

WALTER S. BOOTH. J. -A. LEONARD. 

